JPH0469277B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to external gates for buildings, particularly garage doors.

[Prior Art] A rotating lift door is known from Japanese Patent Publication No. 57-53507, etc., but the present invention proposes a new method for loading the spring of a rotating lift door.

[Problems to be Solved by the Invention] Conventional rotary lift doors have a spring for gravity balance of the door built into the support, which has the disadvantage of a correspondingly large diameter. Since the height of the support column is usually the same as the maximum width of the vehicle, the large diameter of the support has a disadvantage that cannot be ignored when loading and unloading the vehicle. The object of the invention is to overcome this conventional disadvantage.

[Means and Embodiments for Solving the Problems] To describe the configuration of an embodiment of the rotating lift door according to the present invention with reference to a drawing, a straight line in a horizontal plane is defined as an axis of rotation
and two shaft fulcrums 4 separately arranged on the axis X.
1, 42, and one end 21 at the two pivot points 41, 42.
two support arms 21, 22 which are pivotally supported by a, 22a and are rotatable in a plane intersecting the axis X;
and the open ends 21 of the two support arms 21, 22.
between b and 22b, the two support arms 21 and 22
In the rotary lift door consisting of the door 1 installed in a direction intersecting with the above-mentioned two support arms 21, 22 into the hollow part 21', 2
2', and one ends 21a, 22a of the support arms 21, 22 are pivotally supported on the axis
1a', 22a', and the above-mentioned shaft fulcrums 41, 4
The shaft fulcrum 4 is integrated with each of the second support arms 31 and 32 via the shaft 2, and extends in the direction intersecting the axis X and the two support arms 21 and 22 when the door is closed.
Tongue pieces 41a, 4 protruding from the shaft members 1, 42
The hollow parts 21', 22' at the ends of the two support arms 21, 22 are disposed at the tips of the two support arms 21, 22.
One ends of the springs 61, 62 fitted along the longitudinal direction of the support arms 22' are directly pivotally connected, and a part of the hollow parts 21a', 22a' at one end of the support arms 21, 22 are connected to the supports 31, 32. The structure is characterized in that the support arms 21 and 22 are brought into contact with stoppers 71 and 72 that are integrally provided with the support arms 21 and 22 to limit the rotational distance of the support arms 21 and 22 to a range of about 90 degrees.
In addition, 5 is a rotating part with respect to the axis X, such as the door 1 and support arms 21 and 22, and the second digit 2 and 1 of the code used in this specification indicate the left and right sides of the support arm system. , some are not shown, but they appear identically to those of other systems.

[Operation] Since the present invention has the above configuration, for example, if compression springs are used as the springs 61 and 62 as shown in FIG. 2, the tongue pieces 41a and 42
A is provided to protrude substantially vertically downward in the direction intersecting the axis X and the support arms 21 and 22 when the door is closed. Therefore, when the door is closed, the spring 61,
62 is subjected to maximum compression and is designed to store high energy. If the rotational moment of the rotating part 5 around the pivot points 41 and 42 due to the urging force of the springs 61 and 62 is set in advance so that the gravitational moment of the rotating part 5 is approximately equal to each other, the door 1 can be Gravity is greatly reduced, and door 1
The difference in force between opening and closing operations can be minimized. When tension springs are used as the springs 61 and 62, the tongues 41a and 42a naturally project in a substantially vertically upward direction. In addition, the support arms 21 and 22 are arranged in a substantially horizontal direction (when the door is closed) to a substantially vertical direction (when the door is opened).
The rotation stroke is limited by stoppers 71 and 72 so that it can rotate over a range of 90 degrees.

[Other Embodiments] FIG. 3 shows another embodiment, in which the ends of the tongues 41a, 42a and one ends of the springs 61, 62 are indirectly engaged by connecting rods 81, 82, and a known method is used. It has a configuration that applies reciprocating circular motion conversion technology. The operation and effect are the same as in FIG. 2.

[Effects of the Invention] The present invention provides support arms 21, 22 with hollow parts 21',
22', and one end 21a, 22a of the support arms 21, 22 is pivotally supported on the axis
The tongue piece 41a is integrated with the pillars 31 and 32 via 2.
42a, and at the tips of the tongue pieces 41a, 42a,
One end of the spring fitted in the hollow parts 21', 22' of the support arms 21, 22 is connected directly or with a connecting rod 8.
1 and 82, and the hollow portions 21a' and 22a' at one end of the support arms abut against the stopper, so that the rotation range of the support arms 21 and 22 is approximately 90°. By restricting the number of springs, it is possible to open and close the door 1 with a light operation without installing springs in the pillars 31 and 32, and the pillars 31 and 32 can be made slender. This makes it possible to easily take cars in and out of the garage (if the rotating lift door of the present invention is attached to the gate wall or side wall, the gate wall or side wall There is no doubt that the pillars 31 and 32 are the pillars 31 and 32, but in the conventional configuration, the pillars 31 and 32 are always placed inside the gate wall or side wall.
If you compare it with the fact that you have to plant the supports, you can even say that the conventional supports 31 and 32 can be made unnecessary. ).

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a main part of an embodiment of a rotating lift door according to the present invention, FIG. 2 is an exploded perspective view of a main part of FIG. 1,
FIG. 3 is an exploded perspective view of essential parts of another embodiment. 1... Door, 21, 22... Support arm, 21
a, 22a...one end, 21b, 22b...open end, 21', 22'...hollow part, 21a', 22a'...
...Hollow part at one end.

Claims (1)

[Claims] 1 The axis of rotation is a straight line in the horizontal plane, two fulcrums are placed separately on the axis, and one end is supported by the two fulcrums, and it rotates in a plane that intersects with the above axis. Two support arms that are freely movable, a door that is installed between the open ends of the two support arms in a direction intersecting the two support arms, and a door that supports the two pivot points on the ground. In a rotary lift door consisting of two pillars, the two support arms are hollow, and
One end of the support arm is pivotally supported on the shaft, and is loosely fitted into a hollow portion of one end of the support arm, and is integrated with each of the two pillars via the pivot point, so that the shaft and the The tongue piece is fitted into the hollow part of one end of the second support arm along the longitudinal direction of the hollow part at the tip of a tongue protruding from the shaft member of the pivot point in a direction intersecting the second support arm. One end of the spring is pivotally connected directly or indirectly through a connecting rod, and a part of the hollow part of one end of the support arm abuts a stopper integrally provided with the support arm, so that the support arm is A rotating elevator door characterized in that the rotation stroke is limited to a range of approximately 90°.